Dab tsi yog LED nti? Yog li dab tsi yog nws cov yam ntxwv? Lub hom phiaj tseem ceeb ntawm LED nti kev tsim khoom yog tsim kom muaj txiaj ntsig zoo thiab txhim khu kev qha qis ohm hu rau electrodes, thiab ua kom tau raws li qhov tsawg voltage poob ntawm cov ntaub ntawv tiv tauj thiab muab cov ntaub qhwv siab rau cov xov hlau, thaum ua kom lub teeb pom kev zoo. Txoj kev hla zaj duab xis feem ntau siv lub tshuab nqus tsev evaporation. Nyob rau hauv lub tshuab nqus tsev siab ntawm 4Pa, cov khoom yog melted los ntawm cov cua sov los yog electron beam bombardment cua sov txoj kev, thiab BZX79C18 yog hloov mus rau hauv hlau vapor thiab tso rau saum npoo ntawm cov khoom semiconductor nyob rau hauv qis siab.
Feem ntau siv P-hom kev sib cuag hlau muaj xws li cov hlau xws li AuBe thiab AuZn, thaum cov hlau tiv tauj N-sab feem ntau yog ua los ntawm AuGeNi alloy. Cov txheej txheej hlau tsim tom qab txheej kuj yuav tsum raug nthuav tawm ntau li ntau tau hauv thaj chaw luminescent los ntawm cov txheej txheem photolithography, kom cov txheej txheem hlau ntxiv tuaj yeem ua tau raws li qhov yuav tsum tau ua kom zoo thiab txhim khu kev qha qis ohm hu rau electrodes thiab solder hlau siab pads. Tom qab cov txheej txheem photolithography tiav lawm, nws kuj yuav tsum tau mus los ntawm cov txheej txheem alloying, uas feem ntau yog ua los ntawm kev tiv thaiv H2 lossis N2. Lub sij hawm thiab qhov kub thiab txias ntawm alloying feem ntau yog txiav txim siab los ntawm cov yam ntxwv xws li cov yam ntxwv ntawm cov khoom siv semiconductor thiab daim ntawv ntawm lub qhov cub alloy. Yog lawm, yog tias xiav-ntsuab thiab lwm cov txheej txheem nti electrode yog qhov nyuaj, nws yog ib qho tsim nyog yuav tsum ntxiv cov yeeb yaj kiab kev loj hlob, cov txheej txheem plasma etching, thiab lwm yam.
Hauv kev tsim cov txheej txheem ntawm LED chips, cov txheej txheem twg muaj feem cuam tshuam rau lawv cov kev ua haujlwm optoelectronic?
Feem ntau hais lus, tom qab ua tiav ntawm LED epitaxial ntau lawm, nws lub ntsiab hluav taws xob kev ua tau zoo tau ua tiav, thiab chip manufacturing tsis hloov nws qhov tseem ceeb ntau lawm. Txawm li cas los xij, cov xwm txheej tsis tsim nyog thaum lub sij hawm txheej txheej thiab cov txheej txheem alloying tuaj yeem ua rau qee qhov hluav taws xob tsis zoo. Piv txwv li, tsis tshua muaj siab los yog siab alloying kub tuaj yeem ua rau tsis zoo Ohmic kev sib cuag, uas yog lub ntsiab ua rau siab rau pem hauv ntej voltage poob VF hauv chip manufacturing. Tom qab txiav, qee cov txheej txheem corrosion ntawm cov npoo ntawm cov nti tuaj yeem pab tau zoo hauv kev txhim kho qhov thim rov qab ntawm cov nti. Qhov no yog vim hais tias tom qab txiav nrog lub pob zeb diamond sib tsoo log hniav, yuav muaj ntau cov khib nyiab thiab hmoov av ntawm ntug ntawm nti. Yog tias cov khoom no lo rau PN kev sib tshuam ntawm LED nti, lawv yuav ua rau hluav taws xob xau thiab txawm tias tawg. Tsis tas li ntawd, yog hais tias lub photoresist ntawm lub nti yog tsis tev tawm kom huv si, nws yuav ua rau muaj teeb meem nyob rau hauv pem hauv ntej soldering thiab virtual soldering. Yog tias nws nyob tom qab, nws tseem yuav ua rau lub siab poob siab. Thaum lub sij hawm tsim cov txheej txheem nti, nto roughening thiab cov qauv trapezoidal tuaj yeem siv los ua kom lub teeb ci.
Vim li cas LED chips yuav tsum tau muab faib ua ntau qhov sib txawv? Dab tsi yog qhov cuam tshuam ntawm qhov loj me ntawm LED optoelectronic kev ua haujlwm?
LED chips tuaj yeem muab faib ua cov chips qis, nruab nrab lub zog chips, thiab cov chips siab zog raws li lub zog. Raws li cov neeg siv khoom xav tau, nws tuaj yeem muab faib ua pawg xws li theem ib leeg, qib digital, qib dot matrix, thiab cov teeb pom kev zoo nkauj. Raws li rau qhov tshwj xeeb loj ntawm cov nti, nws nyob ntawm qhov tseeb ntau lawm qib ntawm cov chip manufacturers sib txawv thiab tsis muaj cov cai tshwj xeeb. Ntev npaum li cov txheej txheem dhau los, cov nti tuaj yeem ua rau cov khoom tso zis ntau ntxiv thiab txo cov nqi, thiab kev ua haujlwm photoelectric yuav tsis raug hloov pauv. Qhov tam sim no siv los ntawm ib lub nti yog qhov muaj feem xyuam nrog qhov ceev tam sim no ntws los ntawm lub nti. Ib lub nti me me siv tsawg dua tam sim no, thaum lub nti loj siv ntau dua tam sim no, thiab lawv chav nyob tam sim no qhov ceev yog qhov qub. Xav tias cov cua kub dissipation yog qhov teeb meem tseem ceeb nyob rau hauv siab tam sim no, nws cov luminous efficiency yog qis dua qhov qis tam sim no. Ntawm qhov tod tes, raws li cheeb tsam nce, lub cev tsis kam ntawm cov nti yuav txo qis, uas ua rau txo qis hauv qhov hluav taws xob txuas mus tom ntej.

Dab tsi yog thaj tsam ntawm LED high-power chips? Vim li cas?
LED high-power chips siv rau lub teeb dawb yog feem ntau pom nyob rau hauv kev ua lag luam nyob ib ncig ntawm 40mil, thiab lub hwj chim siv rau high-power chips feem ntau yog hais txog ib tug hluav taws xob hwj chim tshaj 1W. Vim tias qhov ua tau zoo ntawm quantum feem ntau yog tsawg dua 20%, feem ntau cov hluav taws xob hluav taws xob tau hloov mus rau hauv thermal zog, yog li cov cua kub dissipation yog ib qho tseem ceeb rau high-power chips, xav kom lawv muaj thaj tsam loj.
Dab tsi yog qhov sib txawv ntawm cov cuab yeej technology thiab cov cuab yeej ua haujlwm rau kev tsim cov khoom siv GaN epitaxial piv rau GaP, GaAs, thiab InGaAlP? Vim li cas?
Cov substrates ntawm LED liab thiab daj chips thiab siab brightness quaternary liab thiab daj chips ob leeg siv compound semiconductor ntaub ntawv xws li GaP thiab GaAs, thiab feem ntau yuav ua tau rau hauv N-hom substrates. Siv cov txheej txheem ntub dej rau photolithography, thiab tom qab ntawd txiav rau hauv chips siv pob zeb diamond sib tsoo log hniav. Lub xiav-ntsuab nti ua los ntawm cov khoom siv GaN siv lub sapphire substrate. Vim lub insulating xwm ntawm sapphire substrate, nws yuav siv tsis tau raws li ib tug LED electrode. Yog li, ob qho tib si P / N electrodes yuav tsum tau ua rau ntawm qhov chaw epitaxial los ntawm qhuav etching thiab qee cov txheej txheem passivation yuav tsum tau ua. Vim lub hardness ntawm sapphire, nws yog ib qho nyuaj rau txiav mus rau hauv chips nrog pob zeb diamond sib tsoo log hniav. Nws cov txheej txheem tsim khoom feem ntau nyuaj dua li ntawm GaP thiab GaA cov ntaub ntawv rauLED dej nyab teeb.

Cov qauv thiab cov yam ntxwv ntawm "pob tshab electrode" nti yog dab tsi?
Lub thiaj li hu ua pob tshab electrode yuav tsum muaj peev xwm ua hluav taws xob thiab muaj peev xwm kis tau lub teeb. Cov khoom no yog tam sim no siv dav hauv cov txheej txheem ua kua siv lead ua kua, thiab nws lub npe yog indium tin oxide, abbreviated li ITO, tab sis nws tsis tuaj yeem siv los ua cov ntaub qhwv. Thaum ua, nws yog ib qho tsim nyog yuav tsum tau ua ntej npaj ib qho ohmic electrode ntawm lub nti, tom qab ntawd npog lub npoo nrog ib txheej ntawm ITO, thiab tom qab ntawd tso ib txheej ntawm cov ntaub qhwv rau ntawm ITO nto. Nyob rau hauv txoj kev no, tam sim no los ntawm cov hlau lead yog sib npaug ntawm cov txheej ITO rau txhua ohmic contact electrode. Nyob rau tib lub sij hawm, vim lub refractive Performance index ntawm ITO nyob nruab nrab ntawm cov huab cua thiab lub refractive index ntawm cov ntaub ntawv epitaxial, lub teeb lub kaum sab xis yuav nce, thiab lub teeb flux kuj yuav nce.

Dab tsi yog qhov kev loj hlob tseem ceeb ntawm chip technology rau semiconductor teeb pom kev zoo?
Nrog rau kev txhim kho ntawm semiconductor LED thev naus laus zis, nws daim ntawv thov hauv kev teeb pom kev zoo kuj nce ntxiv, tshwj xeeb tshaj yog qhov tshwm sim ntawm cov LED dawb, uas tau dhau los ua cov ntsiab lus kub hauv semiconductor teeb pom kev zoo. Txawm li cas los xij, cov chips tseem ceeb thiab ntim cov thev naus laus zis tseem yuav tsum tau txhim kho, thiab kev txhim kho cov chips yuav tsum tsom rau lub zog siab, kev ua haujlwm siab lub teeb, thiab txo cov thermal tsis kam. Kev nce lub zog txhais tau tias nce kev siv tam sim no ntawm cov nti, thiab txoj hauv kev ncaj qha ntxiv yog ua kom cov nti loj. Feem ntau siv cov chips siab zog yog nyob ib ncig ntawm 1mm x 1mm, nrog rau kev siv tam sim no ntawm 350mA. Vim qhov nce hauv kev siv tam sim no, cov cua kub dissipation tau dhau los ua qhov teeb meem tseem ceeb. Tam sim no, cov txheej txheem ntawm nti inversion tau pib daws qhov teeb meem no. Nrog rau kev txhim kho ntawm LED thev naus laus zis, nws daim ntawv thov hauv thaj chaw teeb pom kev zoo yuav ntsib txoj hauv kev thiab cov teeb meem uas tsis tau muaj dua.
Dab tsi yog inverted nti? Nws cov qauv yog dab tsi thiab nws qhov zoo yog dab tsi?
Lub teeb xiav LEDs feem ntau siv Al2O3 substrates, uas muaj hardness siab, thermal conductivity tsawg, thiab hluav taws xob conductivity. Yog tias siv cov qauv tsim, ntawm ib sab, nws yuav ua rau muaj teeb meem tiv thaiv zoo li qub, thiab ntawm qhov tod tes, cov cua sov dissipation kuj yuav dhau los ua teeb meem loj hauv cov xwm txheej tam sim no. Nyob rau tib lub sijhawm, vim qhov zoo electrode tig mus rau sab saud, nws yuav thaiv qee lub teeb thiab txo cov luminous efficiency. Lub zog loj xiav lub teeb LEDs tuaj yeem ua tiav lub teeb pom kev zoo dua los ntawm kev siv tshuab chip flip dua li cov txheej txheem ntim khoom ib txwm muaj.
Tam sim no lub ntsiab inverted qauv mus kom ze yog thawj zaug npaj loj-loj xiav lub teeb LED chips nrog haum eutectic vuam electrodes, thiab nyob rau tib lub sij hawm, npaj ib tug silicon substrate me ntsis loj dua lub xiav lub teeb LED nti, thiab nyob rau saum toj ntawm nws, ua ib tug silicon substrate. kub conductive txheej rau eutectic vuam thiab ib tug txhuas tawm txheej (ultrasonic kub hlau pob solder sib koom). Tom qab ntawd, high-power xiav LED chips yog soldered ua ke nrog silicon substrates siv eutectic vuam khoom.
Cov yam ntxwv ntawm cov qauv no yog tias cov txheej txheem epitaxial ncaj qha hu rau silicon substrate, thiab thermal resistance ntawm silicon substrate yog qis dua li ntawm sapphire substrate, yog li qhov teeb meem ntawm tshav kub dissipation yog zoo daws. Vim lub fact tias sapphire substrate tig mus upwards tom qab inversion, ua lub emitting nto, sapphire yog pob tshab, yog li daws qhov teeb meem ntawm emitting lub teeb. Cov saum toj no yog cov kev paub txog LED technology. Kuv ntseeg hais tias nrog kev loj hlob ntawm science thiab technology,LED teebyuav dhau los ua haujlwm zoo dua yav tom ntej, thiab lawv lub neej kev pabcuam yuav raug txhim kho zoo, ua rau peb yooj yim dua.